Pith Number

pith:DLFALZNU

pith:2017:DLFALZNUVI6AT4MUVOXF2EPWNX

not attested not anchored not stored refs pending

Bispindles in strongly connected digraphs with large chromatic number

F. Havet, N. Cohenn, R. Lopes, W. Lochet

arxiv:1703.02230 v1 · 2017-03-07 · math.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DLFALZNUVI6AT4MUVOXF2EPWNX}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T00:49:20.435247Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1aca05e5b4aa3c09f194abae5d11f66dda0b134f0d6d5b337c283b869515c62f

Aliases

arxiv: 1703.02230 · arxiv_version: 1703.02230v1 · doi: 10.48550/arxiv.1703.02230 · pith_short_12: DLFALZNUVI6A · pith_short_16: DLFALZNUVI6AT4MU · pith_short_8: DLFALZNU

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/DLFALZNUVI6AT4MUVOXF2EPWNX \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 1aca05e5b4aa3c09f194abae5d11f66dda0b134f0d6d5b337c283b869515c62f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "258be1252f759b83598e58d138bca32c4f7ad177324f8dd2a43fe8acb10b888a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2017-03-07T06:11:31Z",
    "title_canon_sha256": "acf80032f0db1c2797d4df2424dfc41fc598653d4af6b038e2a41ab466ca13b2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.02230",
    "kind": "arxiv",
    "version": 1
  }
}